Alfred g



(No Model.)

A. G. HOLGOMBE.

ELEGTRIGAL CALL OR SIGNALING APPARATUS. No. 336,643. PatentedPeb. 23,1886.

ZVz'Z/zmsas I W, a 4 a N FETERS. Plmlo-Ulhogmphzn Washinglcm. I) CALFRED G. HOLCOMBE, QF NEYV YORK, N. Y., ASSIGNOR TO THE EQUITABLEELECTRIC COMPANY, OF SAME PLACE.

ELECTRICAL CALL OR SIGNALING APPARATUS.

.L-PECIPICATION forming part of Letters Patent No. 336,643, datedFebruary 23, 1886.

Application filed November 21, 1885. Ssrial No. 183,470. (No model.)

To aZZ whom it may concern.-

Be it known that I, ALFRED G. HOLOOMBE, a citizen of the United States,residing at New York, county and State of New York, have inventedcertain new and useful Improvements in Electrical Call or SignalingApparatus, of which the following is a speciiication.

This invention relates to that class of electrical apparatus designed toautomatically transmit a call or one of a set of signals from asubstation to a central station; and it consists ofa call or signalinginstrumentemhrac ing a signaling-disk actuated by a spring or othermotor, provided with notches on its periphery arranged to indicate thecalls or messages, and having a pointer or index secured to its shaftadapted to be set opposite the calls or signals marked 011 the case ofthe instrument, a spring pawl or dog carried by a pivoted arm arrangedto catch into the teeth of and hold the signalingdisk when its attachedpointer is set opposite any of the callmessages, a make andbreak contact-point carried by the pivoted arm, a lever arranged to lock the pivotedarm, a push-button for actuating the lever to release the pivoted arm,and a stop-pin projecting from the side of the signaling-disk, which, bycoming in contact with the locking-lever, causes it to lock the pivotedarm when the disk has been rotated by its actuating-spring and thepointer is at the zero-mark.

In the accompanying drawings, forming part ofthis specification, Figurelisa front elevation of my electrical call-box with the cover removed,showing the mechanism in its normal locked position. Fig. 2 is avertical section when the line 00 a", Fig. 1; and Fig. 3 is a viewsimilar to Fig. 1, showing the arrangement of the devices when theinstrument is operating.

The working parts are so made as to occupy but little space, and arecontained in the cylindrical case a, on the cover a of which are markedthe signals or call-messages, as ordinarily done with this class ofelectrical apparatus. In the center of the case is fitted to rotate themain shaft b, and to its end, projecting through the cover a, is securedthe pointer or index 0, provided with a knob, c, j by which it may beset opposite any of the call-messages marked on the cover. One end ofthe .spring (Z is fastened to the shaft 12 and the other end to the casea, the energy of the spring causing the shaft to rotate in the directionindicated by the arrow. (1 represents a train of gears andretarding-escapement of the ordinary construction. The signalingdisk 6is also secured to the shaft Z), and its periphery is serrated orprovided with teeth arranged in any desired manner. and in juxtapositionto this disk 6 is located the pawl or dog f, on the end of the fiatspring g, which is attached to the arm 72, pivoted at h to the case a.This pawl f is held against the periphery of the disk 6 by means of thespiral spring '5, connected between the end h of the pivoted arm h and astud in the case a,- and when the pawlf is against the peripherymf thedisk 6, or in one of the spaces between the teeth, the contact-springj,carried by the arm h, touches the pin or stop 76, fitted in theinsulated block k, attached to the case a, as shown at Fig. 1.

The lever Z, pivoted atl to the case a, is so arranged that its upperend falls into anotch, if, in the end of the arm h, which is inclined.as shown, and locks the arm with the pawlf pressed against the disk e,and with the pinj against the stop or pin k. The lowerend of the lever Zis bent so as to strike the shaft 1) when the upper end ofthe leverisclear ofthe notch h of arm h, and limits the movement of the lever. Thisbent part 1 of lever Z also acts as a stop to the shaft 12 by the pin m,which projects from the face of the disk 0, comingin cont-act therewith.as shown in Fig. l, in which position of parts the index cpoints to thezeromark on the cover on. Just before the pin m comes against the bentpart Z it strikes the side Z of the lever Z, pushes the lower end of thelever away from the shaft 1), and causesits upper end to engage in thenotch h of the arm 71. To release the arm h of the lever l, a rod, or,projects through the case a. Its inner end butts against the lever Zbelow its fulcrum,

and its outer end is provided with a pushbutton, a.

The instrument is designed for use in a closed circuit, one end, 0, ofthe line being connected to the stud which holds the spring 1',-or toany other part of the case,-and the other end, 0, to the stop k.

In setting the pointer c opposite any one of the call-messages marked onthe cover a, the teeth 6 of the disk which may indicate the number ofthe call-box first pass by the pawl 5 f, and then the teeth 6 pass bythe pawl which rests behind the one corresponding to the messageindicated. This action winds up the spring d and moves the pin m awayfrom the lever Z. The flat spring 9 is sufliciently stiff and rigid tooppose the spring din its tendency to turn the disk 0 backward. Now, tosend the call-message to the central station, the pushbutton a ispressed in, which, by its rod n, moves the lower end of the lever Zagainst the shaft 1) and the upper end away from the notch If in the armIt. This'allows the spring cl to turn the disk 6 in the directionindicated by the arrow. The teeth of this disk 6, acting on the pawlf,move the arm it against the ac tion of its spring i and break thecircuit at the springj and stop 7:, as shown in Fig 3, each time a toothpasses by the pawlf, which breaks are indicated at the central stationby asuitablereceivirig-instrument. The number of the teeth 0 which passby the pawl f indicate, by breaks in the circuit, the desired message atthe central station, and the teeth e break the circuit to indicate thenumber of the call-box from which the message is sent. The pin m isduring this time moving back toward the lever Z, and as soon as the lastone of the teeth 6 has passed by the pawl f this pin, by striking theside Z of the lever Z, moves it and forces the upper end into the notchh of the arm 72, the pin m finally resting against the bent end of thelever Z, as shown at Fig. 1.

Having now described my invention, what I claim, and desire to secure byLetters Patent, 1s-

1. In an electrical signaling apparatus, in combination, a serratedsignaling-disk actu ated by a motor, a springpawl engaging in theserrations of the disk, a pivoted arm to which the spring of the pawl isattached, a locking-lever for holding the arm stationary, and a handleor pointer connected to the shaft of the disk, substantially as and forthe purpose set forth.

2 In an electrical call-box, the combination, with a serratedsignalingdisk actuated by a motor, of a pivoted arm provided with acontact-spring, a contact-stop, a locking-lever for holding the armstationary with its contact-spring against the contactstop, a springpawlconnected to the pivoted arm and bearing in a serration of the disk whenthe arm is locked, and a spring attached to the arm to cause thespring-pawl to bear on the serrated disk when the, arm is released,substantially as and for the purpose set forth.

3. In an electrical call-box, in combination, a signaling-disk, aspring-acting pivoted arm, a spring-pawl attached to the arm, alockinglever for holding the arm stationary, having its lower end bentin toward the shaft of the disk, and a pin projecting from the face ofthe disk to act as a stop thereto by coming in contact with the bent endof thelocking-lever, and also as a means to cause the lever to engagewith the pivoted arm by acting against its side just before coming incontact with its bent end, substantially as and for the purmotor, aspring -pawl, f g, engaging in the serrations of the disk, a pivotedarm, h, to which the spring of the pawl is attached, a locking-lever, Z,for holding the arm stationary, and a handle or pointer connected to theshaft of the disk 6, substantially as and for the purpose set forth.

6. In an electrical call-box, in combination, a serrated signaling-disk,e, a -tuated by a motor, a pivoted arm, h, provided with acontact'spring, j, a contact-stop, k, a lockinglever, Z, for holding thearm h stationary with its springj locked against the stop It, aspring-pawhfy, connected to the arm h and bearing in a serration of thedisk 6 when the arm is locked, and a spring, 7:, attached to the arm tocause the spring-pawl to bear on the serrated disk when the arm isreleased, substantially as and for the purpose set forth.

7. In an electrical call-box, in combination, a signaling-disk, e, aspring-acting pivoted arm, h, a spring-pawl, fg, attached to the arm, alocking-lever, Z, for holding the arm stationary, having its lower end,I", bent in toward the shaft of the disk 6, and a pin, m, projectingfrom the face of the disk 6, to act as a stop thereto by coming incontact with the bent end I of the locking-lever, and also as a means tocause this lever Z to engage with the pivoted arm h by acting againstits side Z just before coming in contact with its bent end,substantially as and for the purpose set forth.

8. In an electrical call-box, in combination, a serrated signalingdisk,0, carried by a motor shaft, 7), a pivoted arm, 71, a spring-pawl, fg,attached to the pivoted arm and bearing against the serrations of thedisk, a lockinglever, t, for holding the arm stationary, having itslower end, Z bent in toward the shaft 1), and a push-button, n n, foracting on the lever to cause it to release the pivoted arm, substantially as and for the purpose set forth.

In testimony whereof I have hereunto set my hand at New York, county andState of New York, this 18th day of November, 1885.

ALFRED G. HOLCOIVIBE.

Witnesses:

J OHN M. PENDLETON, ALFRED SHEDLocK.

